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This section contains descriptions of unexplained facts provided by eyewitnesses or published in the media, as well as the results of their analysis by the group.

UFO. United States

ID #1568292394
Added Thu, 12/09/2019
Author July N.
Sources
Phenomena
Status
Hypothesis

Initial data

Initial information from sources or from an eyewitness
Incident date: 
19.05.1961 15:50
Location: 
Лонг-Бич, CA
United States

Twelve shiny UFOs maneuvered erratically over the area at 15:50 with a strange flutter. SATEM was heard two loud "heavenly earthquake".

Translated by «Yandex.Translator»

Original news

Twelve shiny UFOs maneuvered erratically over the area at 3:50 p.m., with an odd fluttering motion; then two loud “skyquakes” were heard. 

Hypotheses

List of versions containing features matching the eyewitness descriptions or material evidence

"Heavenly earthquake" or cielomoto

The phenomenon of "Ground hum" is known in the scientific community under a slightly different name. A loud roar, and even tremor, heard and felt over a large territory – a phenomenon known as "cielomoto", "earthquake sky" or "skyquake". This phenomenon can manifest itself anywhere in the world.

Although the phenomenon is not new (the first mention of it dates back to February, 1829), scientists have been unable to find a full explanation of how and why it occurs. Among the versions which were put forward by scholars in different times to explain this phenomenon:

Investigation

Versions testing, their confirmation or refutation. Additional information, notes during the study of materials
Not enough information

Resume

The most likely explanation. The version, confirmed by the investigation
Not enough information

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